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How do you measure a sink drain for replacement?

Published in Sink Plumbing 2 mins read

Measuring a sink drain for replacement involves a straightforward process using a tape measure and a notepad.

Steps for Measuring a Sink Drain

Here's how to accurately measure your sink drain for replacement, ensuring you get the correct size:

  1. Gather Your Tools: Collect a tape measure, a notepad, and a pencil.

  2. Measure the Sink Hole Opening:

    • Carefully measure the diameter of the drain hole in your sink. This is the opening where the drain assembly sits. Record this measurement.
  3. Measure the Threaded Portion:

    • Next, measure the threaded portion of the existing drain. This part screws into the drain pipe below the sink. Note this measurement.
  4. Verify Your Measurements:

    • Double-check that the recorded measurements of the sink hole opening and the threaded portion of the drain match the specifications required for your replacement drain.

Why Accurate Measurement Matters

Accurate measurements are crucial for a proper fit. Incorrectly sized drains can lead to:

  • Leaks
  • Installation difficulties
  • Reduced drain efficiency

Example

Suppose you measure the sink hole opening and get a diameter of 1.5 inches and a 1.25 inch threaded portion. When purchasing your new drain, ensure the new drain's spec matches this criteria.

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